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Single-chip Meter-bus Transceiver

US ECCN: EAR99 US/Local Export Classification Number

NEW - Custom reel may be available
Inventory: 5,200  

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
View or download

Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
SOIC (D) | 16 2,500 | LARGE T&R
Custom reel may be available
-25 to 85
Package | Pins SOIC (D) | 16
Package qty | Carrier: 2,500 | LARGE T&R
Custom reel may be available
Operating temperature range (°C) -25 to 85
View TI packaging information

Features for the TSS521

  • Meter-Bus Transceiver (for Slave) Meets Standard EN1434-3
  • Receiver Logic With Dynamic Level Recognition
  • Constant-Current Sink Adjustable By Resistor
  • Polarity Independent
  • Power-Fail Function
  • Module Supply Voltage Switch
  • 3.3-V Constant Voltage Source
  • Up to 9600 Baud in Half Duplex for UART Protocol
  • Slave Power Support
    • Supply From Meter-Bus by Output VDD
    • Supply From Meter-Bus by Output VDD or From Backup Battery
    • Supply From Battery – Meter-Bus Active for Data Transmission Only

Description for the TSS521

The TSS521 is a single-chip transceiver developed for Meter-Bus standard (EN1434-3) applications.

The TSS521 interface circuit adjusts the different potentials between a slave system and the Meter-Bus master. The connection to the bus is polarity independent and supports full galvanic slave isolation with optocouplers.

The circuit is supplied by the master through the bus. Therefore, this circuit offers no additional load for the slave battery. A power-fail function is integrated.

The receiver has dynamic level recognition, and the transmitter has a programmable current sink.

A 3.3-V voltage regulator with power reserve for a delayed switch off at bus fault is integrated.


Qty Price (USD)
1-99 1.879
100-249 1.646
250-999 1.154
1,000+ 0.93

Additional package qty | carrier options

Package qty | Carrier 40 | TUBE
Inventory 3,081
Qty | Price (USD) 1ku | 0.968 1-99 1.955 100-249 1.713 250-999 1.201 1,000+ 0.968